Show atmosphere above earths surface the atmosphere Is believed to ex tend much wore more than miles above tile alie earths surface its density decreases dve dee e r eases rapidly for tho the farst few miles of 11 scent then than much more gradually froin the phenomena of awl light duo due to refraction 0 of f 11 light I 1 it t ina amy Y bo be demonstrated that tile the air extends up to a height helf cht of 45 miles bu kother ill alic plic elnell a such as the behavior ot of niete nie tcora ors abid the aurora tiu roro allow that rare air exists nt at a much greater brunter heir hescht lit |